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1、8 X3+ 26 =20 -2 X 3 =36 ( 18 -9 )=123+5 6 X7- 13 =38 -2 X 7 =6 ( 4-3 )=427-6 6X (21-17) =70 -2 X 4 =7X ( 43-42) =8 X ( 39-32 5 X1+ 58 =46 -6 X 7 =8 ( 12 -8 )=41-2 7 X8- 18 =3 X ( 26-22) =10 ( 5-3 )=248+7 3 X2+ 21 =21 -5 X 3 =8 ( 9-7 )=7 X ( 62-58 5 X3+ 65 =11 +7 X 9 =7X ( 38-29) =568-3 6X (34-29) =2

2、0 -1 X 5 =15 ( 9-4 )=357+8 6 X3+ 27 =30 -2 X 4 =6 ( 13 - 10 )=126+3 7 X3-1 =66 +7 X 10 =35 ( 11 -4 )=567-8 9X (29-23) =30 -8 X 3 =9X ( 43-36) =3 X ( 48-42 4 X8+ 41 =10 -2 X 3 =3 ( 8-5 )=205-4 6 X7+ 44 =3 X ( 54-52) =5 ( 6-5 )=366-2 1 X2+ 66 =58 -3 X 5 =35 ( 13 -8 )=8 X ( 33-24 8 X6+ 61 =62 -3 X 6 =8

3、X ( 32-23) =488-6 2X (47-45) =27 +6 X 6 =56 ( 13 -6 )=186+6 5 X3+ 61 =51 -8 X 3 =42 ( 11 -5 )=147+9 4 X2+ 52 =20 -3 X 6 =6 ( 6-5 )=93+7 4X (37-31) =39 -1 X 10 =3X ( 42-34) =5 X ( 36-35 6 X9- 34 =55 -5 X 7 =12 ( 12 -6 )=189+7 2 X6+ 46 =6 X ( 59-54) =20 ( 9-4 )=124+9 8 X2+ 31 =7+3 X 4 =32 ( 18 - 10 )=

4、9 X ( 25-19 4 X8-1 =7+4 X 5 =9X ( 52-47) =33+7 7X (34-29) =56 +8 X 9 =24 ( 7-3 )=497+9 2 X6+ 59 =61 -6 X 8 =12 ( 11 -8 )=55+5 6 X3+ 41 =60 -5 X 8 =8 ( 13 -9 )=82-3 8X (33-27) =60 -8 X 3 =7X ( 29-20) =9 X ( 20-17 7 X8-7 =10 -2 X 4 =21 ( 9-6 )=408+7 7 X7+ 69 =8 X ( 41-39) =24 ( 13 -7 )=66+3 4 X9- 22 =

5、29 +7 X 8 =36 ( 13 -4 )=3 X ( 66-59 2 X7+ 60 =59 -1 X 4 =7X ( 58-54) =255+9 4X (29-26) =8+7 X 9 =56 ( 16 -8 )=648-3 8 X9- 70 =69 -3 X 7 =28 ( 13 -9 )=204+7 5 X3+ 36 =39 -3 X 3 =24 ( 13 -9 )=182-5 6X (45-40) =58 -7 X 3 =6X ( 43-41) =5 X ( 46-42 4 X8-9 =70 -1 X 9 =64 ( 14 -6 )=328-4 9 X3- 19 =6 X ( 39

6、-32) =35 ( 9-2 )=81-2 7 X5+ 39 =39 +5 X 8 =9 ( 6-3 )=4 X ( 32-28 5 X1+ 39 =8+8 X 6 =3X ( 53-44) =248+8 4X (33-31) =22 -1 X 5 =30 ( 13 -8 )=63+8 1 X9+ 29 =20 -4 X 4 =8 ( 9-5 )=366+8 3 X7+ 58 =68 -1 X 10 =40 ( 15 -7 )=306+9 8X (52-46) =19 +7 X 9 =3X ( 28-26) =8 X ( 20-19 5 X3+ 59 =1+8 X 7 =14 ( 5-3 )=

7、488-5 8 X3-1 =6 X ( 49-48) =56 ( 17 -9 )=426-4 3 X4-1 =70 -1 X 9 =20 ( 12 -8 )=4 X ( 22-15 5 X4+ 50 =26 -3 X 3 =4X ( 44-42) =284+ 10 6X (22-16) =14 +9 X 6 =3 ( 5-4 )=408+9 6 X6+ 65 =17 +5 X 5 =16 ( 7-3 )=497-4 8 X7-2 =58 -8 X 4 =30 ( 9-3 )=189+9 6X (34-28) =30 -2 X 7 =3X ( 50-42) =2 X ( 41-38 9 X8-

8、53 =38 -6 X 5 =6 ( 12 -9 )=153+7 6 X7+ 50 =4 X ( 35-26) =15 ( 10 -5 )=246-3 8 X3-3 =24 +3 X 8 =40 ( 11 -3 )=7 X ( 28-23 3 X3+ 29 =20 +8 X 8 =4X ( 52-45) =122-4 8X (55-47) =11 +4 X 7 =24 ( 8-5 )=153+8 6 X5- 24 =43 -7 X 6 =8 ( 12 - 10 )=82-3 3 X3+ 48 =25 +8 X 8 =18 ( 10 -7 )=71-3 8X (39-30) =40 -7 X 5

9、 =7X ( 64-58) =5 X ( 58-51 4 X9+ 52 =16 +4 X 6 =56 ( 9-2 )=164+6 4 X9+ 56 =9 X ( 58-50) =54 ( 15 -9 )=155-3 7 X1-7 =50 -2 X 10 =48 ( 10 -2 )=5 X ( 55-50 8 X2+ 18 =31 +6 X 7 =3X ( 59-52) =426-4 5X (45-38) =32 +5 X 8 =24 ( 11 -5 )=426+8 9 X1+ 39 =55 -7 X 7 =56 ( 16 -8 )=637-4 4 X9- 27 =44 +9 X 9 =7 (

10、11 - 10 )=244+9 5X (67-59) =20 -3 X 4 =4X ( 48-42) =4 X ( 65-57 4 X7- 25 =10 +5 X 7 =30 ( 11 -6 )=328+9 8 X8- 13 =4 X ( 40-36) =32 ( 12 -8 )=648+9 9 X4+ 58 =41 -4 X 9 =16 ( 12 -8 )=8 X ( 56-49 6 X9-6 =43 -5 X 4 =7X ( 20-16) =305-6 4X (23-18) =60 -2 X 2 =28 ( 15 -8 )=122+ 10 1 X1+ 5 =57 -6 X 7 =30 (

11、9-3 )=183-5 7 X5- 29 =44 -6 X 6 =32 ( 16 -8 )=567-4 8X (28-25) =67 -4 X 7 =4X ( 33-27) =4 X ( 35-32 2 X4+ 36 =31 -2 X 7 =32 ( 13 -5 )=217+6 2 X6+ 24 =8 X ( 33-26) =4 ( 13 -9 )=568-7 1 X7+ 58 =17 +6 X 6 =24 ( 9-5 )=3 X ( 32-29 5 X6+ 63 =7+8 X 8 =5X ( 27-19) =324-3 5X (30-28) =44 -3 X 9 =24 ( 9-3 )=24

12、3-5 6 X7- 42 =28 +5 X 6 =54 ( 12 -6 )=213-7 3 X2-2 =60 -1 X 8 =4 ( 6-5 )=279+9 5X (63-60) =23 +8 X 4 =7X ( 49-43) =7 X ( 56-52 5 X8+ 55 =22 +8 X 6 =54 ( 9-3 )=102+7 8 X7-4 =8 X ( 26-22) =8 ( 10 -8 )=126+4 5 X3+ 29 =36 +4 X 10 =40 ( 9-4 )=7 X ( 45-44 6 X3- 14 =54 -2 X 2 =9X ( 27-19) =162+9 6X (45-42)

13、 =47 -7 X 6 =3 ( 12 -9 )=155+4 6 X6- 15 =51 -6 X 3 =6 ( 9-8 )=648-7 1 X8+ 31 =24 -3 X 2 =28 ( 10 -3 )=31+5 2X (35-26) =42 -6 X 5 =6X ( 64-58) =3 X ( 42-35 3 X3+ 48 =12 -1 X 7 =28 ( 6-2 )=81-7 7 X2- 10 =8 X ( 50-42) =32 ( 10 -2 )=164+7 9 X3- 11 =43 +6 X 8 =18 ( 18 -9 )=3 X ( 33-29 3 X8+ 68 =63 -3 X 7

14、 =7X ( 42-36) =186+5 8X (45-37) =22 -2 X 6 =36 ( 9-5 )=162-8 6 X4- 18 =19 +7 X 7 =64 ( 16 -8 )=248+6 8 X7- 16 =39 -7 X 2 =20 ( 9-5 )=81-6 9X (49-44) =2+5 X 4 =5X ( 20-16) =7 X ( 23-15 2 X3-6 =20 -5 X 3 =2 ( 10 -9 )=486-3 6 X4- 15 =3 X ( 32-27) =32 ( 7-3 )=102+7 1 X5+ 31 =50 -3 X 5 =54 ( 13 -7 )=4 X

15、( 28-22 7 X8-8 =3+3 X 10 =6X ( 66-57) =31-3 8X (33-29) =14 +3 X 10 =24 ( 7-4 )=126+3 8 X5+ 54 =26 +4 X 8 =5 ( 11 -6 )=61-6 3 X5+ 46 =69 -6 X 4 =48 ( 15 -7 )=306+7 9X (23-17) =61 -5 X 9 =5X ( 24-21) =9 X ( 17-16 6 X9- 20 =31 -3 X 6 =36 ( 17 -8 )=328-4 7 X8- 14 =4 X ( 41-36) =14 ( 12 - 10 )=279+4 8 X9

16、- 10 =17 +9 X 3 =45 ( 10 -5 )=4 X ( 43-42 2 X6+ 26 =16 +3 X 7 =6X ( 32-25) =183+8 7X (61-53) =70 +8 X 10 =5 ( 9-8 )=284-2 5 X6+ 34 =11 +3 X 9 =30 ( 10 -4 )=63+7 4 X1+ 14 =22 +3 X 8 =10 ( 11 -6 )=186+5 3X (53-49) =23 -3 X 5 =2X ( 32-26) =6 X ( 22-18 5 X5+ 26 =11 +6 X 2 =12 ( 12 -6 )=243+ 10 2 X1+ 48

17、=9 X ( 65-57) =18 ( 11 -8 )=306-5 8 X8- 30 =15 +6 X 9 =35 ( 9-4 )=3 X ( 58-49 6 X7- 20 =20 -2 X 5 =9X ( 58-52) =357-5 5X (32-25) =69 -6 X 3 =24 ( 16 - 10 )=217+8 2 X6+ 42 =46 +6 X 8 =12 ( 7-5 )=459-3 7 X7- 19 =17 -3 X 5 =15 ( 15 - 10 )=164+8 6X (55-53) =33 -4 X 2 =4X ( 46-40) =4 X ( 30-28 6 X7-9 =44

18、 -3 X 4 =24 ( 8-4 )=63+4 5 X6+ 50 =3 X ( 67-58) =12 ( 10 -8 )=102+7 8 X9- 14 =51 -6 X 6 =48 ( 14 -8 )=8 X ( 41-33 5 X3- 10 =33 -3 X 4 =2X ( 61-59) =213-3 2X (52-51) =56 -1 X 4 =24 ( 13 -9 )=497-2 3 X2+ 39 =31 +8 X 7 =30 ( 8-3 )=486-4 8 X1+ 69 =26 -2 X 9 =24 ( 11 -8 )=369-3 7X (31-22) =11 +2 X 6 =8X

19、( 33-29) =9 X ( 25-19 6 X3+ 25 =68 -7 X 8 =8 ( 4-3 )=568+8 7 X4+ 61 =3 X ( 67-58) =64 ( 16 -8 )=488+ 10 6 X9- 48 =22 -3 X 7 =6 ( 14 -8 )=5 X ( 17-15 2 X1+ 63 =36 -1 X 9 =4X ( 27-26) =62+7 4X (27-25) =30 -6 X 2 =18 ( 9-6 )=568-3 3 X6+ 31 =2+7 X 9 =32 ( 12 -4 )=248+7 5 X2-9 =29 -2 X 5 =8 ( 11 -7 )=42+

20、8 9X (49-45) =2+7 X 9 =6X ( 24-17) =7 X ( 59-53 9 X2+ 49 =38 -4 X 5 =30 ( 11 -6 )=305-6 6 X6- 18 =5 X ( 32-23) =16 ( 15 -7 )=426-6 8 X8- 51 =26 -2 X 5 =35 ( 11 -4 )=6 X ( 54-50 4 X4+ 47 =2+3 X 8 =6X ( 67-59) =88+8 8X (26-18) =32 +4 X 10 =8 ( 12 -8 )=408+9 4 X3+ 56 =33 -4 X 6 =24 ( 11 -8 )=217+ 10 3

21、X1+ 45 =46 -5 X 8 =18 ( 12 -3 )=205-3 8X (55-48) =1+8 X 4 =8X ( 46-37) =8 X ( 32-29 2 X9+ 23 =27 -3 X 4 =36 ( 13 -4 )=244+9 7 X9- 28 =5 X ( 45-39) =7 ( 10 -9 )=324-7 3 X4+ 14 =12 +4 X 10 =6 ( 5-2 )=7 X ( 43-35 9 X3- 24 =42 +7 X 8 =3X ( 42-38) =568-5 6X (28-25) =16 +7 X 7 =2 ( 9-8 )=33+2 7 X3+ 69 =13 +4 X 7 =36

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